Folding machine



April 19, 1927. 1,625,566

DPA. ROSENTHAL ET AL FOLDING MACHINE Filed D60. 5, 1926 --Sheet 1 7.2 I.

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. f I EJZ W I abtmq April 19, 1927. 1,625,566 D. A. ROSENTHAL ET AL FOLDING MACHINE Filed Dec. 5. 1926 2 Sheets-Sheet 2 I K I Vinzer 1 am oseniwl Patented Apr. 19, 1927;

" UNITED STATES mmnan A. nosmrrm' aim coun'rxsr r. wmrna, or cnmnpsBUne, -rnNNsYL- PATENT orFicE.

VANIA, 'ASSIGNOBS TO UNITED STATES BAYER KILLS, INC., 01' CHAIBEBSIBUBG,

PENNSYLVANIA.

.FOLDING HAOHINE.

I v Application filed December 23, 1928. fieflal No. 152,591.

This invention relates to new and and useful improvements in folding machines, more particularly'to a machine for folding paper or similar .materials especially adapted for use as sanitary towels and the primary object of the invention resides in providing a new and novel means for tucking, folding and creasing flexible sheets as the same are fed to the machine. I I

.A further object of the invention resides in providing a new and novel means for tuckng flexible sheets fed to the machine and simultaneously folding the material so tucked.

A still further object resides in providing two series of mutilated tucking disks or blades which rotate in opposite directions and operate to engage the material alter nately so as to provide folds in the material formed on opposite sides of the plane in which said materialis fed to the machine.

'Still another object of the invention resides in constructing the mutilated tucking disks or blades with means 'to assist in holding the folds of the material in position as the same areformed to cooperate with a specifically designed and operating folding and creasing means.

Another object of the invention resides in providing means onthetucking elements tending to direct the material, as it is fed.

to the machine, in a position tobe engaged,

by one series or the other of said tucking elements. I

A still furtherobject of the invention 'resides in providing. a device which is comparatively simple and durable in construction, inexpensive to manufacture and one which will be very. eliioient and useful in operation.

With these and'numerous other objects in view, our invention consists in the novel features of construction, combination and arrangement of parts which will be hereinafter referred to and more particularly pointed out in; they specification and claims.

In'the accompanying drawings,forming a partofthis application, I

Figure 1 is a-fragmentary side elevation,

with parts in section, showing the construc-' tion of the mutilated tucking disks or blades and adjunctive parts and illustratingcone position of the mutilated disks or blades as the material is fed to the machine,

Figure 2 is a similar view with the mutilated tucking disks or blades in a slight- 1y different position as the material is fed to the machine,

Figure 3 is a similar View with the tuckmg blades in a still further position as the material is fed thereto, 7

Figure 4 is a. diagrammatic front elevation of-the machine with parts broken awa illustrating articularly the relation of tie tucking bla es to'one another and to the pushing or creasing members, and Figure MS a fragmentary plan view show- 1ng the-relation of .the tucking members" to the material and to the feed roll.

5 n the drawings, in whichsimilar reference characters designate corresponding parts throughout the several views,--we have illustrated only such features as constitute the essential and novel features of our invention, it being understood that these features are applicable to the usual or any preferred form of foldingnnachine frame. The numerals l and 2, respectively, designate upper and lower transverse driving shafts upon which are mounted worm gears 3 and 4 which mesh, respectively, with worms 5 and 6 carried on upper and lower driven shafts 7 and 8 We, have shown a pair of shafts 7. and a pair of shafts 8, although more may be )rovided if desired and the shafts 7 are inl the shafts 8 areinclined upwardly, tending to converge toward the forward end of the machine, as clearly illustrated in Figures 1 to 3, inclusive of the drawings.

Carried on the outer end of the shafts 7 and 8 and applied thereto in any preferred manner is a mutilated tucking disk or blade 35 c ined downwardly and 9 the outer edge of which is arcuate in design tucking disks or blades on the upper shafts I 7 rotate together in opposite directions. as likewise the blades on the lower shafts 8, but

these mutilated disks or blades are so positioned on the shafts 7 and 8 that the upper pair will be in effective tucking 'orfolding position when the lower pair is in ineifecwardly out of the lane of'the blades 9, as

clearly shown in 'guresl to 3, inclusive, and tends to fold and crease the material being fed to the machine as the same is tucked.

The material, which -is usually paper, ar-

ranged in sheets one above the other in staggered relation, so that said sheets may. be interlocked one with the other whenfolded, is fed to the machine through guides 12 and; through the guide rolle1's'13, as shown in Figuresl and 3 of the drawings. 'This ma-- terial, which is designated in the drawings by the numeral 14 is fed to the machine .on a horizontal plane medial of the plane of the shafts 7, and 8 and in order to assist in directin the material to a position to be acted upon y the tucking blades, each of the latter has provided on its outer face a cam block 15 which is arcuate in general design and has its peripheral edge beveled to form the cam face 16. These cam blocks are positioned with respect to the tucking blades so that the material will contact with the faces 16 thereof prior to the engagement of the tucking fingers with said material. Hence, as the material is fed tothe machine the same will contact with the cam faces on either the upper or lower set of tucking members and said material will be directed to a position opposite, the tuckingmembers carrying said cam. As the shafts 7 and 8 are rotated the tucking members will contact with the material and form tucks or folds'therein, the upper and lower sets of tucking bladesalternately engaging the material, as appears obvious from the showing in the drawings. As the one set of. tucking blades form their folds in the material and leave the latter, the tongues 11 thereof will be directed in a position to crease or push rearwardly the folds reviously made and in this manner the fol sof the material are kept in close contact with one another.

W'e have provided, however, a specific means for pushing the folds of the material rearwardly as the machine progresses in its operation wlhich means also tends to keep the folds of the material in close contact with one another. To this end we provide upon the shaft 2 an eccentric 17 to which is connecteda pitman 18. Mounted above and below the shafts 7 and 8 are the oscillating shaft-s 19 and 20. A le er 21 connects with meat-see the shaft 19 and a bell-crank lever 22 con-, nects with the shaft 20. One arm of the bellcrank lever 22 isengaged with a connecting rod 23 which also connects with the outerend of the lever 21, so that the shafts from the construction shown and described that as the material is tucked and folded, these pusher plates will be alternately enga ed with the folds to crease the same an force the folded material rearwardly, accomplishing the results desired.

The pusher plates 24 are positioned,-as shown in Figure 4 of the drawings, between the pairs of tucking blades, so that there will be no interference with the latter in the operation of the machine. It will also be observed that the tucking blades are each in a plane perpendicular to the axis of the shaft to which it is applied and as the shafts carrying said tucking blades are in converging planes,fthe upper and lower pairs of blades are free to rotate and tuck and fold the material withoutinterference with one another. It will further be seen that the pusher members 24: are constructed and timed to operate with the respective pairs of tuck ing blades so as to crease the folds ofthe material and push the latter rearwardly of the machine as the tucking or folding operation progresses,

Fromthe foregoing description of the construction of my new and novel folding machine, the operation thereof will be readily understood and it will be seen that we have provided a simple, inexpensive and efiicient means for carrying out the objects of the invention.

While we have particularly described the elementsbcst adapted to perform the functions set forth, it is obvious that various changes in form, proportion and in the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the principles of the invention.

Having described the invention what we claim is:

1. In a folding machine of the class described, a plurality of opposed rotatable tucking blades for folding material fed thereto, the axes of said blades being out of alinement.

2. In a folding machine of the class described, a series of rotatable tucking blades arranged in opposed pairs, the opposed blades of each pair being on unalining axes and said blades coacting with one another to tuck material fed thereto.

3. Ina 'foldin machine ofthe class described, a plura ity of rotatable tucking blades arranged in opposed pairs, the blades of each pair being on nnalined axes and'cotucking blades for folding material fed thereto, opposed blades being on unalining axes and separate means cooperating therewith for creasing andcompressmg the folds 'of the tucked material as the same leaves the tucking blades.

5. In a folding machine of the class described,.a plurality of rotatable flat blades coacting with one another to tuck material fed thereto, means on said blades tending to crease the folds of the tucked material and additional meansfor compressing said folds as the same leave said blades.

6. In .a folding machine of the class described, a plurality of rotatable flat blades coaeting withv one another to tuck material fed thereto, means on said blades tending to crease the folds'of the tucked material and separate means ooacting with the rotation of said blades for compressing said folds as the same leave said blades.

7 In a folding machine of the class described, a plurality of rotatable tucking blades arranged inopposed pairs, the blades of each pair being on unalining axes and coacting to tuck material fed thereto, means on said blades tending to crease the folds of the tucked material and additional means for'compressing said folds as the same leave.

said blades. 1

8. In a folding machine of the class described, a series of fiat rotatable tucking blades arranged in o posed pairs to tuck material fed thereto, t e.h1ades of each pair being on axesconverging toward the forward end of the machine. p

9. In a folding machine of the clam described, a"series of flat rotatable tucking blades arranged in o posed pairs to tuck material fed thereto, the blades of each pair being disposed on forwardly converging axes, and means cooperating therewith for creasing and compressing the folds of the tucked material as it leaves the blades.

10. In a folding machine of the class described, a .series of flat rotatable tucking blades arranged in o posed pairs to tuck material fed thereto,t e blades of each pair being disposed on forwardly converging axes, means onsaid blades tending to crease the folds of the tucked material and additional means cooperating with said blades .to compress said folds as sameleave the blades. I

11. Ina folding machine of the class described, a pair of forwardly convergingr'otatable shafts arranged in spaced relation one above the other, and tucking blades carried on the forward ends of said shafts for tucking material fed thereto.v

' 12. In a folding' machine of the class described, a pair of forwardly converging rotatable shafts arranged in spaced relation one above the other, a flat blade carried on the forward end of each shaft, said blades coacting to tuck material fed thereto and means-on, said blades tending to crease the foldsof the tucked material as the latter leaves said blades.

v 13. In a folding machine of the class described, a pair of forwardly converging rotatable shafts arranged in spaced relation one above the other, a fiat blade carried on the forward end of each shaft, said blades coacting to tuck material fed thereto and a rearwardly projecting tongue carried on said blades tending to crease the-folds of scribed, a pair of forwardly convergingrotatable shafts arranged in spaced relation one above the other, flat blades carried on the forward ends of said shafts coacting with one another to tuck material fed thereto, means carried on and projecting rearwardly of said blades tending to crease the folds of the tucked material and additional means cooperating with said shafts and blades to compress the said folds rearwardly of said blades. I

15. In a folding machine of the class described, a pair of I forwardly converging rotatable shafts arranged in spaced relation one abovethe other, fiat blades carried on the forward ends of said shafts coacting with oneanother to tuck material fed thereto and alternately oscillating pusher members cooperating with said shafts to compress the folds ofthe tucked material and force the latter rearwardly of said blades.

16. In a. folding machine of the class described, a pair of forwardly converging rotatable shaftsarranged in spaced relation one above the other, flat blades carried on the forward ends of said shafts coacting with oneanc ier to tuck material fedthereto, means on. said blades, tending to crease the folds of the tucked material and force the same rearwardly of said blades, and alternately oscillating pusher members cooperating with said shafts and blades to comress said folds rearwardly of said 1019. es.

17. In a folding machine of the class described, a pair of forwardly converging rotatable shafts arranged in spaced relation one above the other, flat blades carried on the forward ends of said shafts coacting with one another to tuck material fed thereto, rearwardly bent arcuate tongues carried on said blades tending to crease the ill feeding means in advance thereof and means intermediate said feedin means and blades tending to alternately direct the material to the respective blades to be' tucked thereb 19. na folding machine of the class described, upper and lower rotatable blades coacting with one another to tuck material fed thereto, material feeding means in advance thereof and 111 a plane intermediate the axes of said blades and means intermediate said feeding means and blades to alternately direct the material to the respective blades for tucking.

20; In a folding machine of the'class described, upper and lower rotatable blades coacting with one another to tuck material fed thereto, material feeding means in advance thereof and-means carried on said blades. for directing the material respectively .to the latter for tucking.

21. In a folding machine of the class described, upper and lower rotatable blades coacting with one another to tuck material fed thereto, material feeding means in advance thereof and in a plane intermediate the axes of said blades, and cams on the outer faces of said blades for directing the material to the respective blades for tuck in 52. In a folding machine of the class described, upper and lower coacting blades mounted on forwardly converging axes, said blades being rotatable and adapted for tucking material fed thereto, material feeding means in advance thereof and in a plane intermediate the axes of said blades, and

means carried on the front faces of said blades teiiding'to direct the material to the respective blades for tucking.

23. In a folding machine .of the class described, upper and lower rotatable blades coacting with one another to tuck material fed thereto, material feeding means in advance of said blades, the axes of said. blades tending, to converge forwardly, means on the front faces of said blades for directing the material to the respective blades for tucking, and means for creasing and compressing the folds of the tucked material as the same leaves said blades.

24. In a folding. machine of the class described, upper and lower rotatable blades meeting with one'another totuck material fed thereto, the axes of said blades condescribed, upper and lower rotatable blades coacting with one another to tuck material fed thereto, the axes of said blades con-- verging forwardly of the machine, material feeding means in advance of said blades and in a plane intermediate the axes of the latter, means on the front faces of said blades tending to direct the material to the respective blades for tucking, rearwardly projecting arcuate tongues carried on said blades tending to crease the folds of the-tucked material and means operating alternately "in cooperation with the respective blades for complessing said folds rearwardly as the material leaves the tucking blades.

- In testimony whereof we affix our signatures.

DUNBAR A. ROSEN'IHAL. COURTNEY P. WINTER. 

